Inersia: Jurnal Teknik Sipil

Journal Information
ISSN / EISSN : 2086-9045 / 2686-5017
Current Publisher: UNIB Press (10.33369)
Total articles ≅ 46
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Agustin Gunawan, Febriyan Abimanyu, Yuzuar Afrizal
Published: 23 April 2020
Inersia: Jurnal Teknik Sipil, Volume 12, pp 12-17; doi:10.33369/ijts.12.1.12-17

Abstract:
The research is motivated by the large amount of untreated oil palm industrial waste, with a silica contet. This research was aimed to find the compressive strengh of paving block that use oil palm fiber ash as the added material to cement. This research method was experimental. The paving block making prosess was done in the way which the factory did. The specimens made had a size of 20 cm x 10 cm x 6 cm with a ratio of 1 cement : 3 sand. The variations of the ash addition were consecutively 0%, 2,5%, 5%, 7,5%, 10%, 12,5% and 15% to the volume of cement. The total number of specimens was 35, with 5 pieces for each variation. Water requirement in each mixture referred to SNI 03-6882-2002. Paving block was formed manually, soaked for 12 days, then at the age of 13 days paving block was cut into cubes with 5 cm on each side and tested for compressive strength at the age of 14 days. The results of the average compressive strength of paving block in each variation were consecutively 15,13 MPa, 15,22 MPa, 15,78 MPa, 16,44 Mpa, 16,53 MPa, 13,77 MPa and 10,37 MPa. The highest value of compressive strength occurred on the addition of 10% which was equal to 16,53 MPa (increased by 9,25% from the normal paving block (variation of 0%) and the largest decrease occurred on the variation of 15% (-31,51% from the normal paving block). Keywords : paving block, compressive strength, oil palm fiber ash
Dianita Ika Roshinta Dewi
Published: 23 April 2020
Inersia: Jurnal Teknik Sipil, Volume 12, pp 1-11; doi:10.33369/ijts.12.1.1-11

Abstract:
Pada proses pembangunan gedung SMP 3 Muhammadiyah Yogyakarta terjadi permasalahan internal yang mengakibatkan proses pengerjaan berhenti sementara dan terjadi pergantian kontraktor. Ketika pembangunan kembali dilaksanakan, assesment pada gedung diperlukan untuk mengetahui mutu beton. Pada pengerjaan proses assesment terdapat kesalahan prosedur yang mengakibatkan struktur dari bangunan mengalami kerusakan. Beberapa tulangan utama dari struktur kolom terputus dikarenakan proses core drill. Melihat permasalahan tersebut pemeriksaan terhadap evaluasi kinerja struktur perlu dilakukan. Metode yang digunakan dalam pemeriksaan evaluasi kinerja struktur adalah pushover analysis yang disesuaikan dengan pedoman ATC-40. Output dari pushover analysis adalah level kerusakan bangunan. ATC-40 merupakan salah satu pedoman yang digunakan dalam penentuan level kerusakan. Level kerusakan yang dihasilkan dapat digunakan sebagai evaluasi keamanan struktur setelah terjadi gempa. Berdasarkan pushover analysis yang telah dilakukan didapatkan nilai performance point sebesar Sa= 0,091 dan Sd= 0,017 untuk push x sedangkan untuk nilai dari push y adalah Sa= 0,089 dan Sd= 0,016. Sedangkan untuk nilai maksimum total drift 0,00113 dan nilai maksimum inelastic drif 0,00095 pada push x dan nilai maksimum total drift 0,00128 dan nilai maksimum inelastic drif 0,001036 pada push y. Berdasarkan hasil tersebut didapatkan level kerusakan struktur adalah Immediate Occupancy (IO) yang artinya apabila terjadi gempa, hanya sedikit kerusakan struktural yang terjadi. Karakteristik dan kapasitas sistem penahan gaya vertikal dan lateral pada struktur masih masih sama dengan kondisi dimana gempa belum terjadi, sehingga bangunan aman dan dapat langsung dipakai.
Yudhid Purwa Waskita
Published: 23 April 2020
Inersia: Jurnal Teknik Sipil, Volume 12, pp 18-29; doi:10.33369/ijts.12.1.18-29

Abstract:
Teluk Bayur port Padang City has breakwater used to reduce half of energy waves who could damage port building. As time goes by, port were affected big waves, that made breakwater damaged and deformation. The purpose of this study was to analyze structure of breakwater buildings in Teluk Bayur port with breakwater mixed type. Data used in this study are secondary data in the form of wind data for the past ten years (2009–2018) obtained from Badan Meteorologi Klimatologi Geofisika and data on tides for five years (2014, 2015, 2016, 2017 dan 2018) obtained from PT. Pelabuhan Indonesia II Teluk Bayur Padang City. Primary data in the term of observations and direct masurements in the field. The resul of the calculation are = 3,34 meters, = 7,56 second, peak elevation = 5,374 meters, weight of protection layer one = 3,419 tons, protective layer thickness one = 2,519 meters, weight of protection layer two = 341,93 kg, protective layer thickness two =1,169 meter, weight of protection layer three = 17,09 kg, the peak width of breakwater is 2,52 metesr, the number of protective layers each 10 is 12 pieces. Breakwater form in Teluk Bayur with height elevation is 2 meters and width breakwateris 3 meter. The comparison between the dimensions of analysis and the existing dimensions shows that the dimensions of analysis is larger than existing dimensions.
Roy Martin, Muhammad Fauzi, Khairul Amri
Published: 23 April 2020
Inersia: Jurnal Teknik Sipil, Volume 12, pp 30-36; doi:10.33369/ijts.12.1.30-36

Abstract:
The Tetap Watershed covers an area of 12967 hectares (Ha) and is located in Kaur Regency, Bengkulu Province. The purpose of this study was to obtain peak discharge due to the intensity of rainfall in the Fixed Watershed using the HSS Gama 1, HSS Nakayasu and HSS Snyder methods. Estimated amount of peak discharge is input material for water building planning. Hydrological analysis to obtain peak discharge in this way uses daily rainfall data for 10 years. Based on the calculation of the frequency distribution of the 3 rainfall methods, namely the Gumbel Type I distribution method, Pearson Log Type III, and Normal Log, the method used for the calculation of the planned rainfall is the Gumbel Type I Method with return periods 2, 5, 10, 25, 50 and 100 years, that is 87,566 mm; 114,867 mm; 132,940 mm; 155,782 mm; 172,785 mm and 189,543 mm. From the results of the hydrological analysis, the peak discharge in the Fixed Watershed using the HSS Gama 1 Method for return periods 2, 5, 10, 25, 50, and 100 years is 95.93 mm; 117.40 mm; 136.41 mm; 156.23 mm; 170.81 mm and 185.36. Nakayasu HSS method for return periods of 2, 5, 10, 25, 50, and 100 years in the amount of 90.65 mm; 126.21 mm; 142.92 mm; 160.76 mm; 185.05 mm and 202.45. Snyder HSS method for return periods of 2, 5, 10, 25, 50, and 100 years that is equal to 81.79 mm; 94.71 mm; 110.17 mm; 122.33 mm; 133.60 mm and 144.85. The Nakayassu HSS method, which is 202.45 m3 / second with a peak time of 2.57 hours, is the largest and for the Snyder HSS results the smallest of the two other methods, namely 144.85 m3 / second with a peak time of 5.732 hours.
Muhammad Noer Syahputra
Published: 23 April 2020
Inersia: Jurnal Teknik Sipil, Volume 12, pp 58-68; doi:10.33369/ijts.12.1.58-68

Abstract:
Padang Beach is one of the beaches in Sumatra that have an abrasion. Abrasion causes damage to public facilities in the region, the purpose of this research is to design a seawall beach building in the city of Padang Beach. The implementation method of research used with primary data processing is a direct field survey (Hs and Ts) while secondary data using wind data analysis methods, and the analysis of tidal data. Secondary data on this research is the wind data taken for 10 years (2010-2019) obtained from the Meteorological and Geophysical Agency of Meteorology (BMKG) and tidal data taken over the last 5 years (2015-2019) obtained from PT. Pelabuhan Indonesia II of Teluk Bayur. The outcome of the seawall research calculation has a length of 22.58 m, landmark elevation 5.31 m, and the building elevation of 9.31 m, the peak width of 4 m. Weight of seawall protective unit W = 4.152 tons, W/10 = 415.2 kg, W/200 = 21 kg, and the protective sum of each 10 m2 as much as 11 pieces.
Mawardi Mawardi
Published: 23 April 2020
Inersia: Jurnal Teknik Sipil, Volume 12, pp 37-44; doi:10.33369/ijts.12.1.37-44

Abstract:
Kawasan Pembangkit Listrik Tenaga Air (PLTA) Musi Kabupaten Kepahiang merupakan kawasan perbukitan yang memiliki lereng-lereng curam yang rawan terhadap kelongsoran. Salah satu peristiwa longsor terjadi pada awal bulan Oktober 2017 tepatnya terjadi di jalan lintas antara Desa Susup Kabupaten Bengkulu Tengah dan Kecamatan Ujan Mas Kabupaten Kepahiang. Penelitian ini bertujuan untuk menganalisisa stabilitas lereng terasering dengan menggunakan Metode Fellenius. Hasil pengujian sifat fisis tanah menunjukan bahwa tanah pada lereng dikawasan PLTA Musi Kepahiang adalah tanah lempung. Lereng yang diteliti di kawasan PLTA Musi semuanya rawan terhadap kelongsor karena faktor keamanan, FK < 1,5. Berdasarkan hasil penelitian pada lereng 1 tipe lereng yang paling aman nilai faktor keamanan adalah tipe lereng terasering trap 3 kemiringan 19o, FK = 1,61 lebih besar dari nilai faktor keamanan tipe lereng terasering trap 2 kemiringan 19o, FK = 1,57 dan nilai faktor keamanan tipe lereng aman kemiringan 19o, FK = 1,519 serta nilai faktor keamanan tipe lereng asli kemiringan 30o, FK = 0,88.Kata Kunci :Metode Fellenius, Faktor keamana lereng (FK), TeraseringABSTRACTThe Musi Hydroelectric Power Plant area in Kepahiang Regency is a hilly area that has steep slopes that are prone to landslides. One of the landslides that occurred at October 2017 precisely occurred on a highway between Susup Village, Bengkulu Tengah Regency and Ujan Mas District, Kepahiang Regency. This study aims to analyze the slope stability of the terraces using the Fellenius Method. The results of testing the physical properties of the soil indicate that the soil on the slopes of the area of the Musi Hydroelectric Power Plant is clay. The slopes studied in the Musi hydropower area are all prone to landslides because safety factor, FK
Sarah Mar'Atusholihah
Published: 23 April 2020
Inersia: Jurnal Teknik Sipil, Volume 12, pp 45-57; doi:10.33369/ijts.12.1.45-57

Abstract:
Pada masanya angkot digunakan masyarakat dalam menunjang kegiatannya sehari-hari namun permasalahan yang muncul pada saat ini, jumlah pengguna angkot mulai mengalami penurunan. Tujuan dari penelitian ini untuk mengetahui kinerja angkot dan tingkat kepuasan pelanggan terhadap angkot. Kinerja angkutan mengacu pada Pedoman Teknis Penyelenggaraan Angkutan Penumpang Umum di Wilayah Perkotaan dalam Trayek Tetap dan Teratur (Direktorat Jendral Perhubungan Darat 2002). Untuk mengetahui tingkat kesesuaian antara kepuasan dan kepentingan pengguna terhadap angkot dilakukan dengan pendekatan IPA (Importance-Performance Analysis) dan Customer Satification Index (CSI). Hasil studi kinerja angkot pada tahun 2019, menunjukan kriteria angkot dalam kinerja yang baik dengan nilai rata-rata adalah faktor muat 29,75 %, kecepatan perjalanan 24 km/jam, waktu antara 3,4 menit, waktu perjalanan 2,875 menit/km, dan waktu tunggu 1,7 menit. Sedangkan untuk penilaian tingkat kepuasan pelanggan terhadap angkutan umum berdasarkan pendekatan IPA dan penilaian CSI masuk ke dalam kriteria Cukup Baik dengan nilai CSI yang diperoleh 55,56% dalam range nilai 40% < 55,56 ? 60%. Kata kunci: Angkutan umum, Kinerja, IPA, CSI.
Mulyadi Mulyadi, Hasnawati Hasnawati
Published: 6 November 2019
Inersia: Jurnal Teknik Sipil, Volume 11; doi:10.33369/ijts.11.2.17-24

Abstract:
Productivity is one of the important factors in determining the success of a construction job. Increased productivity will reduce work time, and that will reduce costs. In general, the value of productivity is determined by factors in the amount of work volume, time of implementation, and the number of workers. In order for the work to be completed properly, planning efforts are needed by taking into account these factors. For this reason, this study was conducted to determine the value of productivity in one of the components of building work, namely roof cover work. The objects studied were the work of installing roof coverings and the installation of 4 (four) project locations, namely the 4 x 25 Shophouse Construction Project in Meulaboh West Aceh, Building of the Rector & Administration Bureau of STKIP Building Nation Getsempena Banda Aceh, Construction of the Getsempena STIKes College Building Lhoksukon North Aceh and Construction of the East Aceh Bina Nusantara Idi STIKes Building. Roof material using zincalume material. The roof work volume is planned to be 2022.38 m2. The research was conducted through field observations by recording the work volume directly, the duration of each stage of work, and the number of workforce involved. The results of the analysis show that the productivity value for roofing work is obtained at 12,061 m2/hour or 96,487 m2/day and for roof joint installation work is obtained at 13,926 m / hour or 111,405 m/day.
Dwiki Nadita, Besperi Besperi, Gusta Gunawan
Published: 6 November 2019
Inersia: Jurnal Teknik Sipil, Volume 11, pp 1-11; doi:10.33369/ijts.11.2.1-11

Abstract:
Pantai Kota Padang had a breakwater (groin) which serves to withstand sedimentation transport, but building has been damaged and deformed. The purpose of this study was to analyze the building of form I groin using dolos material at Pantai Kota Padang. The method of conducting research primary data processing method used in field direct namely collection (Hs and Ts), while secondary data analysis method using wind data, and analysis data tides. Secondary data in this in this research is the wind data taken for ten years (2009 - 2018) obtained from the Badan Meteorologi Klimatologi dan Geofisika (BMKG) Maritim Teluk Bayur and the tides data taken during the last 5 years (2014-2018) whom obtained from PT. Pelabuhan Indonesia II Teluk Bayur. Results of the groin dolos have 60,803 m in length, 2,20 m on water level, 4,875 m elevation lighthouse and 8,875 m elevation of building, peak width of 1,433 m on the arms building. Weight unit protective cover dolos groin arms are W=0,261 tons, W/10=21,6 kg, W/200=1,3 kg, and amount each layer is 5 m2 as many as 16 pieces for the arms building.Keywords: Breakwater, Groin, Dolos
Ramadhani Niko Saputra, Hardiansyah Hardiansyah, Lindung Zalbuin Mase
Published: 6 November 2019
Inersia: Jurnal Teknik Sipil, Volume 11, pp 41-51; doi:10.33369/ijts.11.2.41-51

Abstract:
This study is designed to model the tendency of Gedung PKM users, Universitas Bengkulu using Agent Based Modelling Method. The vehicle survey is performed to obtain the peak-time period of parked vehicles in Gedung PKM. The questionnaire collecting is performed to obtain the information, which are later used to volume capacity ratio, volume, and road capacity. In this study, several road segments and alternative routes are observed during the evacuation. To inspect the suitability between the modelling and the observation, the simple linear regression analysis is performed. The results show that the most selected route is the shortest route with the best accessibility to reach the gateway, during the evacuation. The road saturation degree shows that there is a need to improve the local road performance in Universitas Bengkulu to ensure a faster evacuation process during tsunami.
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